Conjugated linoleic acid rich vegetable oil production using heterogeneous catalysis
a technology of heterogeneous catalysis and vegetable oil, which is applied in the preparation of carboxylic compounds, fatty acid chemical modifications, organic chemistry, etc., can solve the problems of increasing the negative health risks of dietary animal fats, increasing the total fat and saturated fat intake, and increasing the alkaline catalytic process. achieve the effect of increasing the yield of cla
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example 1
[0047]Example 1 demonstrates the unexpectedly superior results of formic acid mixed with soy oil, in the deodorizing steam supply and as a pretreatment of a transition metal catalyst on the CLA yield to reduce the need for a catalyst. In this Example, CLA-rich oil having up to 26% CLA in the oil was produced using 10% formic acid mixed with soy oil and 85% formic acid in the deodorizing steam when processed at 210° C. at <5 mm Hg pressure for 1-2 hours. Variable levels of 0-0.064% catalyst doses and processing time and temperatures were used to produce up to 26% CLA in the oil. Formic acid was recovered and reused from the condensate and the solid catalyst recovered from the oil. The CLA-rich vegetable oil was produced from RUBSO using a single step ruthenium-based heterogeneous catalysis method with a significantly reduced ruthenium catalyst dose.
[0048]RUBSO for Example 1 was obtained from Riceland Foods (Stuttgart, Ark.) with linoleic acid (55.9%) and linolenic acid (6.9%), as mea...
example 2
[0074]Example 2 demonstrates the production of CLA-rich vegetable oil with no or low trans-fat using a single step transition metal-based heterogeneous catalysis process with a catalyst promoted compound in the absence of hydrogen and air using an oil deodorizer to enhance the catalytic conversion rate from linoleic acid to CLAs in vegetable oils. In this Example 2, a synergistic augmentation effect of catalyst, formic acid and promoter on the production of CLA was determined, along with the effects of catalyst dose and the amount of promoter in the oil deodorizer on CLA yield.
[0075]Once refined, refined bleached deodorized soy oil (RBDSO) was obtained from Riceland Foods (Stuttgart, Ark.) with appropriate linoleic acid (55.9%) and linolenic acid (6.9%), as measured by GC-FID. Heptadecanoic acid methyl ester (17:0; Sigma-Aldrich, St. Louis, Mo.) was used as a standard for GC-FID analysis. Sodium methoxide and anhydrous sodium sulfate (EM Science, Darmstadt, Germany) were used for me...
example 3
[0087]Example 3 demonstrates the inventive process disclosed herein used to produce CLA-rich vegetable oil with no or low trans-fat using a single step transition metal-based, namely nickel, heterogeneous catalysis process with catalyst promoted compounds, namely organic acids and thiol compounds, in the absence of hydrogen and air with a hydrogenation unit to enhance the catalytic conversion rate from linoleic acid to CLAs in vegetable oils. In this Example 3, the synergistic augmentation effect of nickel catalyst, formic acid and cysteine on the production and yield of CLA was further demonstrated, along with effect of the operational parameters, namely temperature, processing time, mixing speed, and types of catalyst materials, on the CLA yield and the trans-oleic acid in the hydrogenation unit.
[0088]Similar to the other examples, once refined, RBDSO was obtained from Riceland Foods (Stuttgart, Ark.) with appropriate linoleic acid (55.9%) and linolenic acid (6.9%), as measured by...
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